The relationship between the superior petrosal sinus and the porus trigeminus: an anatomical study

Tubbs, R. Shane; Mortazavi, Martin M.; Krishnamurthy, Sanjay; Verma, Ketan; Griessenauer, Christoph J.; Cohen-Gadol, Aaron

doi:10.3171/2013.4.jns122062

Cited by 20 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1A). It passed the pontocerebellar cistern and entered the middle cranial fossa through the porus trigeminus, thus corroborating with the existing literature [28]. The trigeminal ganglion was located near the posterolateral part of the cavernous sinus and lateral to the internal carotid artery and abducens nerve (Fig.…”

Section: Trigeminal Nerve and Trigeminal Ganglionsupporting

confidence: 87%

Identification of cranial nerve ganglia using sectioned images and three-dimensional models of a cadaver

2022

View full text Add to dashboard Cite

Background: Cranial nerve ganglia, which are prone to viral infections and tumors, are located deep in the head, so their detailed anatomy is difficult to understand using conventional cadaver dissection. For locating the small ganglia in medical images, their sectional anatomy should be learned by medical students and doctors. The purpose of this study is to elucidate cranial ganglia anatomy using sectioned images and three-dimensional (3D) models of a cadaver. Methods: One thousand two hundred and forty-six sectioned images of a male cadaver were examined to identify the cranial nerve ganglia. Using the real color sectioned images, real color volume model having a voxel size of 0.4 × 0.4 × 0.4 mm was produced. Results: The sectioned images and 3D models can be downloaded for free from a webpage, anatomy.dongguk.ac.kr/ganglia. On the images and model, all the cranial nerve ganglia and their whole course were identified. In case of the facial nerve, the geniculate, pterygopalatine, and submandibular ganglia were clearly identified. In case of the glossopharyngeal nerve, the superior, inferior, and otic ganglia were found. Thanks to the high resolution and real color of the sectioned images and volume models, detailed observation of the ganglia was possible. Since the volume models can be cut both in orthogonal planes and oblique planes, advanced sectional anatomy of the ganglia can be explained concretely. Conclusions: The sectioned images and 3D models will be helpful resources for understanding cranial nerve ganglia anatomy, for performing related surgical procedures.

show abstract

Section: Trigeminal Nerve and Trigeminal Ganglionsupporting

confidence: 87%

Identification of cranial nerve ganglia using sectioned images and three-dimensional models of a cadaver

2022

View full text Add to dashboard Cite

show abstract

“…Erroneously, the petroclinoid fold has also been described as the posterior petroclinoid ligament. [1][2][3][4][5][6] The posterior petroclinoid fold, which normally contains the superior petrosal sinus, 7 is accompanied by the anterior petroclinoid fold, the continuation of the tentorial incisura onto the anterior clinoid process. and forms the lateral border of the oculomotor trigone.…”

Section: Introductionmentioning

confidence: 99%

Ossification of the Posterior Petroclinoid Dural Fold: A Cadaveric Study with Neurosurgical Significance

Kimball

Matusz

et al. 2015

J Neurol Surg B

View full text Add to dashboard Cite

Objectives The roof of the porus trigeminus, composed of the posterior petroclinoid dural fold, is an important landmark to the skull base surgeon. Ossification of the posterior petroclinoid dural fold is an anatomical variation rarely mentioned in the literature. Such ossification results in the trigeminal nerve traversing a bony foramen as it enters Meckel cave. The authors performed this study to better elucidate this anatomical variation. Design Fifteen adult cadaveric head halves were subjected to dissection of the middle cranial fossa. Microdissection techniques were used to examine the posterior petroclinoid dural folds. Skull base osteology was also studied in 71 dry human skulls with attention paid to the attachment point of the posterior petroclinoid dural folds at the trigeminal protuberances. Setting Cadaver laboratory Main Outcome Measures Measurements were made using a microcaliper. Digital images were made of the dissections. Results Completely ossified posterior petroclinoid folds were present in 20% of the specimens. Of the 142 dry skull sides examined, 9% had large trigeminal protuberances. Conclusions Based on this study, the posterior petroclinoid dural fold may completely ossify in adults that may lead to narrowing of the porus trigeminus and potential compression of the trigeminal nerve at the entrance to Meckel cave.

show abstract

“…[2231] As for the relationship between this sinus and the opening of Meckel's cave, also known as the “porus trigeminus,” Tubbs et al . [37] reported three types in which the sinus courses superior to, inferior to, or around the opening to Meckel's cave. The sinus was found to course inferior to or around the opening of Meckel's cave in over 30% of the specimens, an important anatomical variation that has to be considered before and during subtemporal transtentorial and retrosigmoid suprameatal approaches.…”

Section: Discussionmentioning

confidence: 99%

Absence of the superior petrosal veins and sinus: Surgical considerations

Matsushima¹,

Ribas²,

Kiyosue³

et al. 2015

Surg Neurol Int

View full text Add to dashboard Cite

Background:The superior petrosal vein, one of the most constant and largest drainage pathways in the posterior fossa, may result in complications if occluded. This study calls attention to a unique variant in which the superior petrosal veins and sinus were absent unilaterally, and the venous drainage was through the galenic and tentorial drainage groups.Methods:This study examines one venogram and another anatomic specimen in which the superior petrosal vein and sinus were absent.Results:The superior petrosal veins, described as 1–3 bridging veins, emptying into the superior petrosal sinus, are the major drainage pathways of the petrosal group of posterior fossa veins. In the cases presented, the superior petrosal vein and sinus were absent and venous drainage was through the galenic and tentorial groups, including the lateral mesencephalic or bridging vein on the tentorial cerebellar surface.Conclusions:In cases in which the superior petrosal sinus and veins are absent, care should be directed to preserving the collateral drainage through the galenic and tentorial tributaries. Although surgical strategies for intraoperative management and preservation of venous structures are still controversial, knowledge of the possible anatomical variations is considered to be essential to improve surgical outcomes.

show abstract

The relationship between the superior petrosal sinus and the porus trigeminus: an anatomical study

Cited by 20 publications

References 26 publications

Identification of cranial nerve ganglia using sectioned images and three-dimensional models of a cadaver

Identification of cranial nerve ganglia using sectioned images and three-dimensional models of a cadaver

Ossification of the Posterior Petroclinoid Dural Fold: A Cadaveric Study with Neurosurgical Significance

Absence of the superior petrosal veins and sinus: Surgical considerations

Contact Info

Product

Resources

About